. . . PENNIES for the AGES . . . Without looking, dig into the collection and grab NINE PENNIES. No . . . Instead, push the “Sample More Data” button on the screen and read the average age of a sample! Note the horizontal and vertical scales on the grid here and then record that (rounded) average age using a properly scaled X. Tuesday, February 11, 2014 MAT 312
Tuesday, February 11, 2014MAT 312. Tuesday, February 11, 2014MAT 312.
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MAT 312
. . . PENNIES for the AGES. . .
Without looking, dig into the collection and grab NINE PENNIES.
No . . . Instead, push the “Sample More Data” button on the screen and read the average age of a sample!
Note the horizontal and vertical scales on the grid here and then record that (rounded) average age using a properly scaled X.
Tuesday, February 11, 2014
Prob & Stat (MAT 312)Dr. Day Tuesday February 11,
2014 Grab 9 Pennies at Random then Calculate and Plot Their
Average Age
Collect Assignment #3; Return Re-dos from past assignments
Continue: Data Representations Box-and-Whiskers Plots Calculator Connections
Measures of Spread
Characteristics of 1-Variable Data Center/Location Spread (Variation/Deviation) Shape
Quiz #1 (Test #1 prep)Tuesday, February 11, 2014
MAT 312
MAT 312
Representing DataDisplay Summary
Visual
Line Plot (Dot Plot)
Stem-and-Leaf Plot
Scatter Plot
Circle GraphBar GraphHistogram
Box-and-Whisker Plot
Numerical
Raw DataOrdered ListFrequency
Table
Measures of Center(mean, median, mode)
Measures of Spread(range, deviations,
variance)Markers of Locations
(percentiles, 5-number summary)
Tuesday, February 11, 2014
MAT 312
Initial Steps: 1-Variable Data Analysis
Clusters are isolated groups of points.
Gaps are large spaces between data points or between clusters of data points.
Outliers are data values substantially larger or smaller than any other data points.
The maximum value of a data set is the largest value in the set. It is also called the upper extreme.
The minimum value of a data set is the smallest value in the set. It is also called the lower extreme.
The range of a data set is the difference between the maximum and minimum values of a data set.
The mode of a data set is the value that occurs most often in the data set. A data set can have more than one mode, and if no data value occurs more often than any other, there is no mode.Tuesday, February 11, 2014
MAT 312Tuesday, February 11, 2014
MAT 312Tuesday, February 11, 2014
MAT 312Tuesday, February 11, 2014
For which company would you prefer to work?
This is a random sample of 10 salaries from each of the two companies.
MAT 312Tuesday, February 11, 2014
Which school had the better test scores?
Scores from a common test given to 10 students at each of two schools.
MAT 312Tuesday, February 11, 2014
MAT 312Tuesday, February 11, 2014
MAT 312Tuesday, February 11, 2014
MAT 312Tuesday, February 11, 2014
MAT 312
Assignment #3 collected today!
Quiz #1 (Test #1 prep) today! Quiz #2 Thursday Quiz #3 next Tuesday
Test #1: Thursday, Feb 20: 1-Variable Data Analysis (Chs 1-3) All material through Tuesday, Feb 18. Two parts
Multiple Choice Open Response
Assignments
Tuesday, February 11, 2014
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